code: def pytest_generate_tests(metafunc):
      fargs = []
      eps = np.finfo(np.float32).eps
      # weight ranges
      w_rng = [[-1.0, 1.0]]
      rng_max = [eps]
      fargs = itt.product(w_rng, rng_max)
      metafunc.parametrize("allrand_args", fargs)
  
file_path: neon/tests/test_merge_layer.py
imports: from builtins import zip
  import itertools
  import numpy
  from neon import NervanaObject
  from neon.initializers.initializer import Uniform
  from neon.layers import Affine, MergeMultistream, Sequential
  from utils import allclose_with_out
label_desc: Use image node_id 1 for calling a global function with example usage: pytest_generate_tests(metafunc) without return types